Prime-Line, Inc. is a manufacturer of products made from MDF and LDF. HOME
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MATERIAL SAFETY DATA SHEET

MDF Treads & Risers

Prime-Line's MDF Treads & Risers offer a low cost option to virtually all lumber or laminated type carpet grade stair treads

Features & Benefits:

  • Low Cost
  • No Voids
  • No grain rise
  • Water and Moisture Resistant
  • Routs, nails & machines much better than SYP, Doug Fir, Hem/ock and / or Particle board
  • Solid construction reduces sound increasing acoustics
    Reduces stair squeak
  • Will not cup or warp like solid wood
  • Meets or exceeds FHA & HUD requirements NPA 9-87
    ASTM D 1037-1991 & ANSI A 208.1
  • Affordable and especially when combined with Prime-Line's MDF Risers
  • Easy to install using conventional framing & fastening devises

Physical Properties
Modulus of Rupture 4,500 psi
Modulus or Elasticity 400,00 psi
Internal Bond 90
Screw Hold 300 #
Thickness variance +/- .005 in.


MDF 1 1/8" Bullnosed Stair Treads
Contact Us for Pricing Information

Size/Description Pcs per Unit Pcs per T/L Weight Per Unit
1 1/8" x 10 1/4" or 10 1/2" x 36" 80 4000 12#
1 1/8" x 10 1/4" or 10 1/2" x 42" 80 3360 14#
1 1/8" x 10 1/4" or 10 1/2" x 48" 80 2960 16#
1 1/8" x 10 1/4" or 10 1/2" x 54" 80 2640 18#
1 1/8" x 10 1/4" or 10 1/2" x 60" 80 2240 20#
1 1/8" x 11 1/4 or 11 1/2" x 36" 80 3360 14#
1 1/8" x 11 1/4 or 11 1/2" x 42" 80 2960 16#
1 1/8" x 11 1/4 or 11 1/2" x 48" 80 2640 18#
1 1/8" x 11 1/4 or 11 1/2" x 54" 80 2400 20#
1 1/8" x 11 1/4 or 11 1/2" x 60" 80 2160 22#
1 1/8" x 11 1/4 or 11 1/2" x 84" 80 1520 31#
1 1/8" x 11 1/4 or 11 1/2" x 108" 80 1200 40#

MDF 1 1/8" Bullnosed Stair Treads

Size/Description Pcs per Unit Pcs per T/L Weight Per Unit
7 1/2" x 36" 150 8550 5.6#
7 1/2" x 42" 150 7350 6.5#
7 1/2" x 48" 150 6450 7.4#
7 1/2" x 54" 150 6000 8.0#
7 1/2" x 60" 150 5250 9.0#
8" x 36" 150 7950 6.0#
8" x 42" 150 6750 7.0#
8" x 48" 150 6000 8.0#
8" x 54" 150 5250 9.0#
8" x 60" 150 4800 10.0#

We will manufacture to your specification!